Improved bbick machines



the forni gradually inelincs' downward to the discharging edges shown `by the red lines I 2 34 in fig. `The. l

`There are many different arrangements for finishing the upper side of the brick made on mouldwheel machines,

@uitrit tatrs utwt @ffice .Letters Patent ivo. 68.9437 inferi A" lumber 17, 1867.

. i l y IMPROVED BRICK MACHINES.

tito Stlptulrnfunb tu in disc jttttnfs zitint mit uniting putt nt tigt senin.

TO ALL WIIOM IT MAY CONCER-N:

Bc it known that I, C. SEBGEANT, of Columbus, in the county oi`\Franklin,.iu the State of Ohio, have invented a new improvement in Brick Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon. t i

The nature ot' my improvements consist-s in the peculiar arrangement of the propeller for shoving `theclay into the mould', also, the construction of the track for varying the thickness of the brick, and so arrangingthc. striker-plate or pressure-plate, in connection with an adjustable incline upon the track, that the clay or brick can be pressed harder on one edge to compensate for the friction of the pressurcplate whilst passing out from it, and leave the brick ot' equal thickness when dry. l

, To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation. V i l I construct my machine upon the same principle as the old English mould-wheel machine, using the pugmill, mould-whecl, and gearing of similar construction now in common use in `this country. l

Figure 1 is e perspective view of the machine. Figure l is a part section oF the pug-mill, tub, and its bottom, also the striker-plate, mouldfwhcel, and the adjustable track. l l l l l Figure 3 is a plan view ot' the track for supporting the followers, also showing the position of` the -screws for regulating the pressure and the thickness ofthe brick. I

Figures 4 and 5 are plan views of the propeller for filling the moulds. Letters of reference represent corresponding parts in cach ligure. l, 1 Letters A A, in tig. I, represent the frame. Letter' B represents the tub or hopper for the clay, in which are placed the ordinary mixing-knives, and the shaft D, wit-l1 the propeller at its lower end. Letter C represents the mouldwhcel, which is supported upon a shaft and friction-rollers, and is revolved by the gearing connecting with the shaft D. Letter E represents the projection cast upon the bottoni ofthe pug-mill, to which is fastened the scraper or striker-plate, and made adjustable, as shown in my patent dat-cd June 11, 1867. Letter F rep-` resents the wheel and screw for sliding the incline, shown by letter I, backward and forward.` Letter G represents the wheel and screw for operating a serios of inclines which are placed underneath a section of thetrack," and having a bearing upon the lower framing. 'Letter Il represents the moulds `in the wheel, ten. in number. The incline I is constructed ot` steel, and held to its place by dove-tailed slots and pins, made to travel abnit.A two inches. The red lines shown by figures l 2 il 1l in fig. l represent the receiving edges et my propeller, and

advantage in constructing a propeller of this forni can be seen by the line lp-b in fig. 4, and by the line afli-` in fig. 5. The inside ot' thc cutting edges inclines to a point outward, which increases"the'friction of the` clayl to the outside of the tub andprevents the motion of the propeller from turning it around, which'prevents iilling, and as the clay passes downward near the bottoni the form of` `the propeller is such that it; `carriesthe clay into or towards the centre of the pug-mill, as shown by the red lines 1 2 f5 4 in fig. 5. Stones that wbuld break the ordinary propeller, by this arrangement are carried to the centre and discharged into the moulds. l

Having fully described its construction, I will proceed to describe its operation.` l The machine can be driven by horse or steam-power, the power-.being applied to the shaft D. The tub or hopper being filled with clay, the machine is then put in motion. The cla-y is tempered by the mining-knives in the hopper, and is then forced down through the opening in the bottoni of the tub into the moulds. 'The mould-wheel moving in the direction ofthe arrow, the clay in the moulds is brought out from under the striker# plate and raised to the surface of the 1nould-wheel by the incline shown at K in lig. Q, where it `is taken oil` some using au additional scraper, which leaves the brick thicker on one edge than the other. There is` B; M. Gards patent, June 5, 1866, for extending the striker-plate and pressing directly 11p against it. Thefriction is so great that it draws the clay to the back part of the mould, and one side receiving too Lunch pressure, the brick measure one-quarter of' an inchlarger on one side than the other. overcome this difficulty by equalining the fgiction on the striker-plate by additional pressure on the eounteracting side ot" the brick. To accom plish this purpose l place an adjustable plate of steel,V about one-quarter of nn inch thick, upon the tra-ck arranged for sliding it backward and-forward, and when the moulds get partially covered by the .striker-plate the roller on thc bottom of the follower rolls up on to thc pluto and presses one--hnli` or a portion ol' the clay in the mould, whilst the other portion discharges its surplus out of the remaining opening, ns fully shown in fig. 2. This gives the clay in the forward or front side of the mould an increased pressure, and thc striker-plate bcingabeut the size of thc mould, the friction is reduced, so thut the brick, when it comes out, has receivcdnn even pressure, and will dry both edges the same. By changing the position of the incline or plate, either side can he favored as required. The surplus clay can be discharged under tbe projection E of the bottom of the pug-mill, back into the tub, or through an outletto the side of the machine. The bricks can be made of any desired thickness by raising'or lowering the section of -the track shown at in iig. 3. This does not alter the pressure, but simply admits more or less clay into the mould. I know that there aro patents for adjustable trucks for different purposes, as shown in P. H. Kells patent, March y26, 1867 for pressing, rie.

I do not claim raising the follower so as to expel the surplus clay whilst under the pug-mill, nor do I claim raising the follower so as to press thc brick against the Striker or pressure-platc; but what I do claim, is

1. Raising the follower so as to press a portion of the clay in the mould, and the expelling of the surplus from the mould, in the manner and for the purpose speci/lied.

2. I claim regulating the pressure by means of the sliding-plate, shown and described.

3. I claim regulating the thickness of the brick by raising or lowering a section of a continuous track bymeans of wedges and screws, or their equivalents, as shown and described.

4. I claim the construction of a propeller, that the receiving and the discharging edges will operate on the clay as shown and described and for the purpose specified.

HENRY C. SERGENT. Witnesses:

JOHN S. IIoLLiNususAn, G. W. 'Muni-1u. 

